Advanced search

Advanced search is divided into two main parts, and one or more groups in each of the main parts. The main parts are the "Search for" (including) and the "Remove from search" (excluding) part. (The excluding part might not be visible until you hit "NOT" for the first time.) You can add new groups to both the including and the excluding part by using the buttons "OR" or "NOT" respectively, and you can add more search options to all groups through the drop down menu on the last row (in each group).

For a result to be included in the search result, is it required to fit all added including parameters (in at least one group) and not fit all parameters in one of the excluding groups. This system with the two main parts and their groups makes it possible to combine two (or more) distinct searches into one search result, while being flexible in removing results from the final list.

This paper presents preliminary result in a flexible fixture solution for airframe assembly comprising a modular steel framework called Box-joint and flexible tooling modules called Hexapods. The solution is comprises a framework that is screwed together instead of welding beams together, which enables re-building the framework when performing change-over in a more extensive reconfiguration. The Hexapods are parallel legged passive fixture stands that can change their configuration to facilitate easy setup in a change-over between handle different assemblies. A solution to configure the Hexapods manually is described. The investment cost can be kept low by using a metrology system to provide for high accuracy in the tool configuration process instead of using precision parts in the fixture system.

This paper describes experiences from several years of DfE studies at different manufacturing companies, as well as their strategies for approaching DfE. The general experience from the authors is that in order to make DfE truly utilized, it must become a "living part" of the company. To reach this point, it is important to obtain a strong commitment not only from the manufacturing company's management, but also from other DfE stakeholders throughout the company, at both the strategic and operational levels. DfE initiatives must be considered as a strategic issue and an investment in increased competitiveness. When summarizing all the experiences presented in this paper, a conclusion is that manufacturing companies often have a need for a general model that focuses on how to make "DfE thinking" a natural part of the company's way of doing business

In this paper, the parallel and normal cutting forces on the tip of the tool are examined when altering a number of parameters in peripheral milling. The parameters studied are rake angle, chip thickness and upward/downward milling. The evaluation of the forces has been performed during cutting of the chip and the variation in the forces has been recorded. In this way, important information can be obtained in order to arrive at cutting data and tool geometries that will reduce surface defects such as torn and raised grain. In the past, very few investigations have been carried out on peripheral milling, probably because of the difficulties of measurement. Nowadays, however, new measuring techniques and equipment make it possible to measure cutting forces even in standard milling machines. In this work, a sensor was placed under the workpiece to measure the forces in three directions at frequencies up to 7000 Hz. To obtain detailed data, a plastic material was used so that the cutting (revolution) speed could be kept at a minimum, thereby maximizing the number of readouts per incision. The results show how the normal force (the force component perpendicular to the workpiece) varies during the cut and how it is dependent on the examined parameters. This force changes from negative to positive during the cut. When altering the machining parameters, the normal force changes in both direction and magnitude. The other force component, the parallel force, also shows a dependence on the parameters. The objective of this research is to find parameters that minimize the normal forces in order to avoid damage to the wood.

Manufacturing companies face many challenges today. One of these is how to successfully meet increasingly diverse customer needs. This paper elucidates, from several perspectives, how mass customization could be enabled using integrated product and service engineering. BT Products AB (BT) produces forklift trucks in Sweden that are customized and sold through various kinds of product offerings, which are also customer-tailored. By doing so, BT can offer their customers increased value through customized product service offerings. This paper shows, through a case study at BT, how the customization issues are tackled by the company. Though the development of products and services is conducted in separate organizations at BT, the company has managed to create successful customized offerings for its customers. However, with a more integrated development BT could become even more successful in its customer offerings.